Julius c



(No Model.)

J. 0. LANDMANN.

WATCH REGULATOR.

No. 269,588 Patented Dec. 26, 1882.

UNITED STATES PATENT OFFICE.

WATCH-REGULATQR.

SPECIFICATION forming part of Letters Patent No. 269,588, dated December26, 1882,

Application filed August 24, 1862.

To all whom it may concern Be it known that I, JULIUS C. LANDMANN, ofDutch Flat, county of Placer, State of California, have invented anImproved WVatch- Regulating Attachment; and I hereby declare thefollowing to be a full, clear, and exact description thereof.

My invention relates to an attachment for regulating the speed ofwatches; and it consists of a segment-rack attached to the outer end ofthe regulating-arm. Vith this meshes a pinion the shaft of which extendsthrough the watch and has another pinion upon the opposite end, which isengaged by the teeth of a gear-wheel, the shaft of which extends throughthe face and has an index-arm secured to it. By moving this index-armthe regulatoris adjusted without opening the watch, a circular scaleshowing the amount of adjustment made.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a view of my watch. Figs. 2, 3, and 4 showthe interior construction.

A is a watch having the balance-wheel B,

hair-spring O, and the regulator-arm D in the usual position. The arm Dis made stronger in my invention than in the ordinary construction, asit has to carry a segment of a circle,

E, the periphery of which is formed into a toothed rack, as shown.Through the inner (No model.)

case, opposite to the regulator. The shaft of this wheel passes throughthe face of the watch, and has an index-hand, J, upon it, with a smalldial properly divided off, so as to show how much movement is given theindicator J.

The operation will then be as follows: If the rate ofspeed at which thewatch is rune is to be blgisilqne fifphithefaee, without opening theback part of the watch, by simply moving theindicator J. This turns theshaft and the gear-wheel I, which imparts motion to the pinion H andthrough its shaft to the pinion Gr. The latter pinion moves the rack E,which is fixed to the end of the regulator-arm, and thus makes thedesired change.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The regulator-arm I), having the curved rack E at its outer end, incombination with the pinions G and H, fixed to opposite ends of a shaft,the gear-wheel I, and index J, substantially as herein described.

2. The means for regulating a watch without.opening or exposing theinterior, consisting of the indicator J, movable over a scale upon thewatch-face and connected with a-

